Building-block.



O. P. MANN.

BUILDING BLOCK.

APPLIGATION PIVLBD JULY 24, moo.

952,91 8. Patented Mar. 22, 1910.

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OSCAR F. MANN, F INDIANAPGLIS, INDIANA.

BUILDING-BLOCK.

Application led July 24,

To all whom it may concern:

Be it known that I, OSCAR F. MANN, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new .and useful Improvements in Buildingof thenext course into place one at a time.V

In a nine inch Wall, for example, the'two rows of which it is formed arelaid up seven courses at av time with the bricks running lengthwise ofthe wall, and every seven courses the wall is tied by a course of bricksplaced transversely. Before this tie course is laid, the space betweenthe inner and outer rows is supposed to be thoroughly flushed and filledwith mortar, but in practice this space is not lled at all in manycases. This method of forming a wall is slow and expensive.v y

My invention contemplates the piling or laying up of all of the bricksbetween a tie course wlthout mortar and the introduction of the mortarat the top between the `inner .and outer rows of brick. A suicientquantity of mortar will be placed on top of the l loosely piled brickand then by pressure the mortar will be made to permeate every jointbetween the bricks below. In practice, this wall will preferably beformed between apair ofV vertical parallel retainers or forms, spacedthe width of the-desired wall from each other. The forms serve thepurpose of a uide for placing the `bricks in position ancgl itIv alsoserves as a restraint to hold the bricks and mortar when lpressure isapplied at the top of the new wa l to force the mortar home.

In the proper construction of a wall as above described, it is essentialthat the bricks used in 1t be separated from eachJ other a uniformdistance equal to the Width of the required mortar joint, and the objectof this invention is articularly to provide means as a part of t e brickor other build- Specification of Letters Patent.

Patented Mar. 22, 190s. seria1 No. 327,548.

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ing block to compel their separation just the required distance whenthey are piled up preliminary tothe addition of the mortar.

Referring to the accompanying drawings, `Figure 1, represents in frontview, a number of bricks with my improvement, laid up for the formationof a wall, the View being before the mortar is applied. Fig. 2, is aperspective view of a molded brick embodyl ing my invention. Fig. 3,illustrates inperwhich it is cut into sections each of which sectionsconstitutes a brick of regulation dimensions having my improvement, andFig. 4 is a plan view of a two-course wall under construction, made withthe blocks illustrated in Fig. 3.

usual size and shape and has the integral projecting portions 5 on itsside. These projections extend out from the side of the brick a distanceequal to the width of the mortar' joint which will be required foruniting the bricks when they are formed into a wall and it is obviouslyimportant that the projections have equal extensions so as to make themortar joint of uniform thickness in all arts of lthe Wall and to bringthe bricks 1nto alinement in straight rows as the wall progresses.AvWhile I have shown only two'of these extensions 5 on the same side ofthe brick and have placed these where they will be at the middle oftheir surface whenthe brick is broken into'half bricks, it is obviousthat more than two extensions can be used and thatn their -positions maybe changed without departing from the spirit of this invention. Forexample, four of these extensions or lugs might bev used on a side, oneapproximately at each corner of the brick, with the advantage that thefour lugs would have greater tendency to prevent tipping of the brickthan where only the two middle ones are used.

6 is an extension or lug at the end of the brick at the corner oppositethe corner between the end and side havingthe extensions 5. Thislocation is determined by the charge the brick from the mold. It is not\necessary to place these extensions or lu s more' than one Iside andend of the bric though they may be placed on both sides and ends withoutdeparting from the spirit of this invention.

spective a clay slab andthe manner in' y The brick 4 shown in Figs. 1and 2 is of necessity of manufacture in order to dis-fr Fig. 3 shows theadaptation of my invention to a brick which 1s pressed out of themachinein slabs and then cut into brick sizes. Instead of lugs the extensionsfor spacing the'bricks are in the form of ribs 7 which serve the samepurpose .as the lugs above described.

The bricks or blocks are laidl in two or more vertical rows-and themortar or grout ing is then forced by pressure into the vertical spacebetween the rows whence it will enter laterally into the horizontalspaces between the blocks and fill them. Temporar molds are employed, aspreviously describe to retain the grouting within the intersticesbetween the blocks. The blocks will be laid in a .wall in the samemanner as is shown in Fig. 1, and as the ribs 7 extend transversely ofthe blocks, or endwise to the direction of flow of grouting, they willnot obstruct the movement of the latter I am aware of the patent to,yScott, No. 721,751, having side and end Vedge-projections to space theblocks apart and also to retain the grouting within the wall, but myblock is of a different form, without the side projections and requiresthe use of temporary molds to retain the grouting in the spaces betweenthe blocks, and mortar joints show in the usual way in the nished wall.

l Having thus fully described my invention what I claim as new and wishto secure by Letters Patent of the United States, is-

1. A solid building block, having six plane surfaced sides, two of whichhave mortar spacing lugs, which serve to space one side and one end ofthe block from adjacent Ablocks and permit the unobstructed flow ofmortar grout horizontally and vertically through three or more Verticalrows of blocks.

2. A wall composed of solid .building blocks each having a `planesurfaced end and side anda like side and end each provided with aspacing lug or lugs which serve to space apart sa1d side and end fromthe opy posing block or blocks, the blocks so arranged in the wallstructure that the body portion of each block is spaced a art from thebody portion of every other lock and the unobstructed flow of mortargrout is permitted both horizonally and vertically through three or morerows of blocks, substantially as shown and described.

In Witness whereof, I, have hereunto set my hand and seal atIndianapolis, Indiana,

this, 21st day ofJuly, A. D. one thousand nine hundred and six.

OSCAR F. MANN. [1.. s]

Witnesses: JOSEPH A.' MINTURN, F.' W. WOERNER.

